in
问题描述：
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答
在语气上或用.语气(in...tone)
eg.Unless it is a black-tie occasion,make the invitation informal in tone.
如果不是隆重的场合,邀请要用非正式的
Heath wrote us a letter friendly in tone,sparse in content.
希思给我们写了一封语调友善、内容空泛的信.
Old Crones Spoke in Low Tone
干瘪老太婆用低声调讲话